fix: host lookup by hostname, interactive input with spaces

cmd/hostkeeper/connect.go

@@ -103,6 +103,20 @@ func findHost(ctx context.Context, store storage.Storage, identifier string) (*m
 		}
 	}
 
+	// Try to find by hostname
+	for _, h := range hosts {
+		if h.Hostname == identifier {
+			return h, nil
+		}
+	}
+
+	// Try to find by ID prefix (short ID match)
+	for _, h := range hosts {
+		if len(h.ID) >= 8 && h.ID[:8] == identifier {
+			return h, nil
+		}
+	}
+
 	// Host not found, provide helpful error
 	return nil, fmt.Errorf("host '%s' not found. Use 'hostkeeper list' to see available hosts", identifier)
 }